@example.com bob@other-example.comTo finalize the change, the virtusertable.db file must be updated using the followingcommand as root:makemap hash /etc/mail/virtusertable < /etc/mail/virtusertableThis creates an updated virtusertable.db file containing the new configuration.3.1.3. Common Sendmail Configuration ChangesWhen altering the Sendmail configuration file, it is best not to edit an existing file, but togenerate an entirely new /etc/mail/sendmail.cf file.CautionBefore changing the sendmail.cf file, it is a good idea to create a backup copy.To add the desired functionality to Sendmail, edit the /etc/mail/sendmail.mc file as the rootuser. When finished, use the m4 macro processor to generate a new sendmail.cf by executingthe following command:m4 /etc/mail/sendmail.mc > /etc/mail/sendmail.cfBy default, the m4 macro processor is installed with Sendmail but is part of the m4 package.After creating a new /etc/mail/sendmail.cf file, restart Sendmail for the changes to takeeffect. The easiest way to do this is to type the following command:/sbin/service sendmail restartImportantThe default sendmail.cf file does not allow Sendmail to accept networkconnections from any host other than the local computer. To configure Sendmailas a server for other clients, edit the /etc/mail/sendmail.mc file, and eitherchange the address specified in the Addr= option of the DAEMON_OPTIONSdirective from 127.0.0.1 to the IP address of an active network device orcomment out the DAEMON_OPTIONS directive all together by placing dnl at thebeginning of the line. When finished, regenerate /etc/mail/sendmail.cf bySendmail191
